Portable screen



FIG. 1 is a fully assembled front view showing the design;

FIG. 2 is a fully assembled back view showing the design;

FIG. 3 is a fully assembled side right view showing the design;

FIG. 4 is a fully assembled side left view showing the design;

FIG. 5 is a fully assembled top view showing the design;

FIG. 6 is a fully assembled bottom view showing the design;

FIG. 7 is a fully assembled isometric view showing the design; and,

FIG. 8 is a partially assembled and exploded view showing the design.

CLAIM The ornamental design for a portable screen, as shown anddescribed.